Duncan-Parnell Inc. | 5,592 followers on LinkedIn. Successful Projects Start Here | Since 1946, Duncan-Parnell has been the trusted supplier to architects, engineers, construction contractors, surveyors and designers. We carry the best brands in the industry from Trimble® surveying and mapping equipment to HP® wide format printers. With a rich and innovative history we continue to add meaningful solutions to better serve the industry such as custom signs and graphics printing, drones, construction supplies and more.